798 
Journal of Agricultural Research 
Vol. XXI, No. xx 
The species shows a marked tendency toward attaching in dense 
groups about the head and neck of the host. Sometimes these patches 
are almost circular. 
In 1917 H. P. Wood made an effort to secure oviposition of the lice 
under control on cattle, but with little success. Evidence was gained 
which indicates that the incubation period is rather long, probably about 
12 days, and also that the eggs will not hatch when removed from the 
host. 
Fig* i *—Solenopotes capillatus: Dorsal aspect 
of female. X 40. 
Fig. 2.— Solenopotes capillotus: Ventral 
aspect of female. X 40. 
DESCRIPTION 
THE FEMALE 
As the female of this species has not been described, it will be character¬ 
ized fully here. 
Eength (fig. 1 and2) about 1.5 mm., greatest width about 0.7 mm., thorax and legs 
brownish yellow, abdomen grayish blue. 
Head.— Eength 287 n, width 215 ft. Anterior margin rather broadly rounded, 
lateral margins slightly widest behind antennae, somewhat narrowed at transverse 
groove just anterior to antennae, posteriorly pointed. Antennae attached about one- 
third length of head from anterior border, rostrum just ventrad of anterior margin, a 
chitinized rim around anterior margin above rostrum. Antennae slightly longer than 
greatest width of head, basal segment markedly broader than succeeding segments, 
segments 3 and 4 somewhat shorter than others. Several short spines on anterior 
margin of head, two spines on ventral surface behind antennae, dorsally with a slightly 
curved row of about five spines on either side, one somewhat smaller spine outside 
the anterior end of this row just in front of the antenna on either side, and two near 
the margin behind the antennae. Near the median line is a small spine on either 
